Can confirm, they're great! I will sometimes take a day trip from London to a different town, and it's nice to take the bike with me on the train, disembark, and be able to cycle around without worrying about which bus to take, how to pay, etc. But I can still take the bike on the bus if needed!

Brompton is probably the #1 brand bike thieves will target though, everyone I know who has one never leaves it out of their sight. That's way too stressful for me, I don't want to take it with me in the supermarket or watch over it at the pub. I just got a cheap Decathlon with very low thief appeal.